Evidence map›Paper›PMID 36237414›Full record

ArticleCognitive neurodynamics2022

Time-estimation process could cause the disappearence of readiness potential.

Lipeng Zhang, Haikun Ren, Rui Zhang, Mingming Chen, Ruiqi Li, Li Shi, Dezhong Yao, Jinfeng Gao, Yuxia Hu

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Article in Cognitive neurodynamics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Lipeng ZhangSchool of Electrical Engineering, Zhengzhou University, Zhengzhou, China.
Haikun RenSchool of Electrical Engineering, Zhengzhou University, Zhengzhou, China.
Rui ZhangSchool of Electrical Engineering, Zhengzhou University, Zhengzhou, China.
Mingming ChenSchool of Electrical Engineering, Zhengzhou University, Zhengzhou, China.
Ruiqi LiSchool of Electrical Engineering, Zhengzhou University, Zhengzhou, China.
Li ShiDepartment of Automation, Tsinghua University, Beijing, China.
Dezhong YaoSchool of Electrical Engineering, Zhengzhou University, Zhengzhou, China.
Jinfeng GaoSchool of Electrical Engineering, Zhengzhou University, Zhengzhou, China.
Yuxia HuSchool of Electrical Engineering, Zhengzhou University, Zhengzhou, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Generally, the readiness potential (RP) is considered to be the scalp electroencephalography (EEG) activity preceding movement. In our previous study, we found early RP was absent among approximately half of the subjects during instructed action, but we did not identify the mechanism causing the disappearance of the RP. In this study, we investigated whether the time-estimation process could cause the disappearance of the RP. First, we designed experiments consisting of motor execution (ME), motor execution after time estimation (MEATE), and time estimation (TE) tasks, and we collected and preprocessed the EEG data of 16 subjects. Second, we compared the event related potential (ERP) waveform and scalp topography between ME and MEATE tasks. Then, to explore the influence of time-estimation, we analyzed the difference in ERP between MEATE and TE tasks. Finally, we used source imaging to probe the activation of brain regions during the three tasks, and we calculated the average activation amplitude of eight motor related brain regions. We found that the RP occurred in the ME task but not in the MEATE task. We also found that the waveform of the difference in ERP between the MEATE and TE tasks was similar to that of the ME task. The results of source imaging indicated that, compared to the ME task, the activation amplitude of the supplementary motor area (SMA) decreased significantly for the MEATE task. Our results suggested that the time estimation process could cause the disappearance of the RP. This phenomenon might be caused by the counteraction of neural electrical activity related to time estimation and motor preparation in the SMA.

Indexed as

EEGReadiness potentialSource imagingSupplementary motor areaTime estimation

Identifiers

PMID36237414
PMCPMC9508310

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.